Table 3. Leaf area index (LAI) at ripening stage of different rice cultivars under different nitrogen and phosphorus rate in the early season of 2019.

Season	Site	Treatment	Baixiang139	Guiyu 9	Y Liangyou 1	Teyou 582	Average
Early		N180P90	3.00 ± 0.99abc	3.85 ± 0.18a	2.75 ± 0.72abc	2.66 ± 0.63bc	3.07
	Binyang	N90P45	2.71 ± 0.81bc	3.38 ± 0.12ab	2.42 ± 0.14bc	2.95 ± 0.94abc	2.87
		N0P0	2.32 ± 0.64bc	2.83 ± 0.43abc	2.12 ± 0.42c	2.25 ± 0.22c	2.38
		Average	2.68	3.35	2.43	2.62	2.77
		N180P90	2.37 ± 0.58abc	3.61 ± 0.62a	2.40 ± 0.62abc	2.52 ± 0.78abc	2.73
	Beiliu	N90P45	1.84 ± 0.51bc	3.25 ± 0.49ab	2.17 ± 1.20abc	1.87 ± 0.16bc	2.28
		N0P0	1.26 ± 0.35c	2.46 ± 0.95abc	1.97 ± 0.29abc	1.58 ± 0.28c	1.82
		Average	1.82	3.11	2.18	1.99	2.28
		N180P90	2.39 ± 0.34ab	3.38 ± 0.53ab	3.85 ± 1.53a	3.14 ± 1.25ab	3.19
	Liucheng	N90P45	2.12 ± 0.90ab	2.65 ± 0.79ab	2.70 ± 0.86ab	2.18 ± 0.29ab	2.41
		N0P0	1.56 ± 0.29b	1.75 ± 0.20ab	1.20 ± 0.33b	1.78 ± 0.58ab	1.57
		Average	2.02	2.59	2.58	2.37	2.39
Late		N180P90	2.63 ± 0.30ab	1.12 ± 0.49cd	2.24 ± 1.04abc	2.97 ± 0.49a	2.24
	Binyang	N90P45	1.89 ± 1.80abcd	1.42 ± 0.81bcd	1.36 ± 0.09bcd	1.61 ± 1.01bcd	1.57
		N0P0	1.41 ± 0.42bcd	0.97 ± 0.16cd	0.85 ± 0.13d	1.36 ± 0.28bcd	1.15
		Average	1.98	1.17	1.48	1.98	1.65
		N180P90	3.12 ± 0.25ab	2.96 ± 0.67ab	3.30 ± 1.03a	3.07 ± 0.74ab	3.11
	Beiliu	N90P45	2.47 ± 0.27abc	2.56 ± 1.08abc	2.39 ± 0.53abc	3.16 ± 1.05ab	2.65
		N0P0	2.03 ± 0.21abc	1.75 ± 0.49bc	1.36 ± 0.43c	1.90 ± 0.46abc	1.76
		Average	2.54	2.42	2.35	2.71	2.51
		N180P90	2.64 ± 0.44ab	3.16 ± 0.35a	2.78 ± 0.49ab	2.40 ± 0.82abc	2.75
	Liucheng	N90P45	1.93 ± 0.20bcd	1.96 ± 0.96bcd	1.98 ± 0.08bcd	2.42 ± 0.63abc	2.07
		N0P0	1.39 ± 0.23d	1.49 ± 0.26d	1.61 ± 0.33cd	1.59 ± 0.21cd	1.52
		Average	1.99	2.2	2.12	2.14	2.11

Note:

Values in columns with different letters showed significant differences (P < 0.05). ± Value represents the SE value among the replications.